Why doesn't trivago have my booking information?

trivago is a hotel search and price comparison website so we are not actually involved in the booking. After finding the deal to your liking on trivago, you would have clicked it to be taken to the booking site offering the price (e.g. Expedia, Booking.com) where you made a reservation directly with them. For your online security, we keep no records of the transactions made through the booking sites and cannot access or alter your booking in any way.